| 摘要 |
An apparatus and method for supporting the conductor pipe, the access platforms, the wellhead and the wellhead equipment of an offshore well located in a depth of water above a water bottom after a drilling rig has been removed from the location, where a movable drilling rig is used to drive the conductor pipe into the mudline of the water bottom and temporarily support the conductor pipe while the offshore well is drilled and completed with a wellhead, through the conductor pipe, comprising means for holding the conductor pipe in tension from the drilling rig; a caisson driven into the mudline adjacent to the conductor pipe; a plurality of at least three anchor piles driven into the mudline around the caisson; a plurality of anchor cables; means for attaching to the anchor piles and to the caisson; means for tightening the cables to a desired degree of tension; a plurality of conductor braces mounted to the caisson between the caisson and the conductor pipe for supporting the conductor pipe at intervals along its length above the mudline; and wellhead access means mounted to the caisson for access to the wellhead.
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